Getting baptised is a very short term solution. In time you will quite likely get disfellowshipped, and that will destroy your relationship with your father far worse than it is now. If you manage to fade later and become inactive, you will then have your father on your case again about being inactive.
The better long term solution is not get baptised, face the immediate consequences if your father does follow through with his threats, but know that in the long term there will remain a better chance of some sort of relationship.